Variety comes at it's own price, and variety isn't always a positive thing to be held above no matter what. There are places where it is not needed unless the idea of shattering single faction into separate sub-factions has roleplay reason to be that. Right now there isn't. If you think harder the variety is already there - it's provided by two Wilde factions, each having own style and unique touch. Factions like these have to maintain consistency across, and if one would appear having separate ideals it would break the consistency, and for the sake of what exactly? Variety for the sake of variety? I think Nomads around Discovery have enough as it is. Personally I'd be more interested to see in what would concept of infested faction transform in Bretonia and Liberty. That's where variety can be attained without breaking overall consistency.
Although. How is that all related to the topic anyway? I'll tell you what - it's not.